Countdown Girl - A female that looks good from a distance, but her appearance becomes progressively worse upon approach.
"I thought she was hot, but she ended up being a Countdown Girl."

"What do you mean a countdown girl?"

"I thought she was a 10, but as I was walking up to her she turned into a 9...8...7...6..."

*Hysterical Laughter*
by Dee Wayne December 8, 2009
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A small and limited period of time where one engages in as much sexual contact with as many partners as possible.
I'm leaving the country in a month so I am going on a dickdown countdown.
by adamnmn86 May 13, 2010
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In Ron Jeremy films, the female counts down from 20, and on 0 Ron comes right in her mouth.
Female: It's time for the infamous countdown... I'll countdown from 20 and on 0, you cum right in my mouth.
Ron: On 0, right in the mouth.
by Scripple021 May 6, 2004
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its like normal countdown but on the street made famous by I.T Crowd
Let Street Countdown Game Begin I'll Have A Vowel I'll Have A Consonant Please
by I LOVE TOASTERS July 4, 2010
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An attractive female who studies maths or has a degree in it.

However it can generally be used to describe any attractive and intelligent girl.
"Brooo, you see that fit girl walk out of science class?" Damn she's a proper countdown girl"
by shitsplatter September 21, 2013
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When you're feeling extremely happy (or occasionally awfully sad) that you can't wait til getting home to upload your facebook status, thus ignoring your family at all.
YOU: I can't believe it!I passed the exam!I graduated!!

FRIEND: oh,congrats dude! go home,your family must be anxious and wanting to hug you and celebrate!

YOU:no way man! I'm on the facebook countdown,,all I want is to upload my status.. My family will have time to celebrate then.

FRIEND: you freak!
by Nachoo December 19, 2009
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Nickname of San Antonio, Texas because of its area code number is 210. Orlando, Florida also has claim to the name because its area code is 321
by Alfred O. August 6, 2007
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